[vintagecollect]

looking at this old thread.

The ctc4 and ctc5 BOTH grey 21AXP22 CRTS while not seeing a ct-100 in person these sets benefit being in subdued light since contrast declines in brighter lighted room. There's a subway commercial I compare my modern tvs green to my roundie sets green. The lettuce is bright green on old and new sets, the green seems lighter on older sets.

In general grass seems light, reds are eye popping, blues slighty subdued is my take from general watching without use of special equipment.


Grey crts seem to have a critical bightness level to them where contrast is good yet screen doesn't appear too dark. The brightnees can be adjusted high where dark areas of screen appear lightened. These CRTS are fun to have but a newer fjp or fbp tube have more contrast. Older CRTS have less contrast in moderate to bright sunlight. These older sets interpret color changes with stations, program material and quality. The NTSC signal from old sets is shown without newer advanced compensating or color balancing circuits, wouldn't these make great station color monitors?


While the novelty of orginal CRT is great why isn't newer tubes considered an upgrade?? The 65' zenith I had was more watchable in daylight and appeared to have greater contrast. brightness seemed less critical to screen quality also. Overall seems upgraded set is more watchable. Using special color meters or other equipment seems overdoing it to prove older tubes have better color .Usually better performance meansan upgrade.


I guess if a newer 15" version of color tube with greater contrast and brightness were available, people would still be chasing those old original tubes.

I watched my set for 6 hours today. The daylight conditions seem to effect grey CRTS pretty much the way room or sunlight has effect on a video projector screen. Light bouncing off crt face and back to viewer. The green screen crts I don't think really aren't that very much brighter you just dont have light bouncing from the room back at you as much. this post updated sice my grey crt had plenty of bightness today which worked actually really well with window opposite of set! but the contrast declined at least some in brighter light conditions. Projector people use the phrase "contrast ratio" older crts must their contrast ratio declined in competing light . My 1996 mitsubishi is much newer and has a black face crt still suffers reflections from the crt glass itself.